Paleto Bay Warp

Question: Why does GTA Online warp me back to the beach and remove my plane when I’m flying near Paleto Bay?

Answer: We are currently investigating a rare issue reported by players in GTA Online where if they enter a certain area off the shore of Paleto Bay they are getting instantly relocated back to the beach. In some instances, players have experienced this while in a plane conducting a Supply Delivery and have had the plane and Supplies disappear as a result. While we work on a fix for this, we encourage players to avoid this specific location, which is located in the waters northwest of the long peninsula extending from Paleto Bay.

Source: Paleto Bay Warp – Rockstar Support